On union ultrafilters [article]

Peter Krautzberger
2011 arXiv   pre-print
We present some new results on union ultrafilters. We characterize stability for union ultrafilters and, as the main result, we construct a new kind of unordered union ultrafilter.
arXiv:1012.4532v2 fatcat:twd4cf6alnhohmfqdltqvaffem